Authentication failed: Greeting never received

Hi ​@knowledg3,

Welcome to the Community.

Thanks for reaching out to the Zapier Community! The "greeting never received" error usually means Zapier can't establish a proper connection with your Mailu server. Start by verifying your SMTP settings—especially that port 465 is open and configured adequately for TLS. Also, check for any firewall rules blocking the connection, and confirm your SSL/TLS setup is valid with a complete certificate chain. Testing with tools like Telnet or OpenSSL can help pinpoint the issue. Lastly, make sure the credentials and server details in Zapier are accurate. If the problem persists, check your Mailu logs or contact Zapier Support with your setup details.

Feel free to ask if you need further help or have additional questions. We're here to assist you.

Hey ​@knowledg3, just checking in 👋

Did Jammer’s suggestions help to point you in the right direction? Or are you still having some trouble connecting your account? 

If you are still getting those “greeting never received” errors can you confirm which email app that’s showing that error? If that’s not the full error message, if you could share a screenshot showing the entire error you’re seeing that would me much appreciated. Just be sure to remove any personal info (names, emails etc.) before sharing using a tool like Zappy.

Looking forward to hearing from you! 🙂

thanks for responding i never resolved the issue with  mailu so i just switched over to postfix and so far so good. thank you

Hi ​@knowledg3,

Great to hear that switching to Postfix is working well for you! Finding the right tool can really streamline things. If you need help setting up automations with Postfix or anything else, feel free to reach out. We're here to help—thanks for being part of the community.